how to find index in for loop python code example

Example 1: python for with iterator index

for index, value in enumerate(iterator):
    print(index, value)

Example 2: python gt index in for cycle

my_list = [0,1,2,3,4]
for idx, val in enumerate(my_list):
    print('{0}: {1}'.format(idx,val))
#This will print:
#0: 0
#1: 1
#2: 2
#...